insert tbuseronline insert into tbuseronline(useronline_thoigiangannhat,useronline_ip,useronline_random,useronline_nhom,user_id,user_username,useronline_ngaydang) values('1505938441','54.80.26.116','6994120','0','0','','2017-09-21 03:14:01')Duplicate entry '235604' for key 'PRIMARY'